Well pump



` Jan. 18, 1938.

F. C. KNISS ET AL.

WELL PUMP Filed March 17, 1936 Patented Jan. 18, 1 938 UNITED STATESWELL PUMP' Frank C. Kniss and Richard N. Vickers, Smackover, Ark.

Application March 17, 1936, Serial No. 69,368

6 Claims.

This invention relates to an improved well pump and more particularly toa pump for use in deep weils. One object of the invention is toprovidean improved valve structure adapted to be mounted in the bottom of awell at the lower end of the well tubing where it will be immersed inoil or other liquid and serve very eiectively to permit the oil to beforced upwardly through the well tubing and out at the upper end or topof the well.

Another object of the invention is to provide a valve structure whereinthe valve casing which is carried at the lower end of the Well tube isformed with passages or ducts through which a large quantity of oil maybe forced during reciprocation of the pump. It will thus be seenthatwhen this improved valve is in use, large quantities of oil may beforced upwardly through the well tube or casing and a good flow of oilassured.

Another object of the invention is to provide lan improved core for thevalve casing which carries valve balls for controlling' directional flowoi' oil or other liquid through the core and valve casing and to furtherprovide the core with sealing members having close contacting engagementwith walls of the bore of the valve casing so that during operation ofthe pump, oil will follow a predetermined path and enter and leave thevalve casing correctly.

Another object of the invention is to so construct the core of the valvethat it will be rmly held in place within the valve casing but may bewithdrawn as a unit when cleaning, repairs or replacements arenecessary.

The invention is illustrated in the accompanying drawing, wherein-Figure 1 is a sectional view taken longitudinally through the improvedvalve.

Figure 2 is a sectional view taken transversely through Figure 1 alongthe line 2-2.

Figure 3 is a sectional view taken along the line 3-4 of Figure 1.

Figure 4 is a sectional view taken transversely through Figure 1 alongthe line 4-4.

The standing valve which is shown in longitudinal section in Figure lhas a cylindrical casing I and may be of any length and diameterdesired. 'I'he bore 2 of the casing is of an even diameter throughoutsubstantially the entire length of the casing but has its upper endportion enlarged and internally threaded, as shown at 3, to provide asocket by means of which the standing valve may be attached at the lowerend of a well tube in the usual manner. It will thus be seen that thestanding valve will be -mounted at the lower end of the well tube orcasing and will be immersed in a body of oil at the bottom of a well.Ducts 4 and 5 are formed longitudinally of the valve casing I in opposedportions of walls of the casing, as shown clearly in Figures 2 and 3,and referring to Figure l it will be seen that these ducts are oil-setlongitudinally of the valve casing, the duct 4 extending downwardly forapproximately half itslength below the lower end of the duct 5 and atits lower end having an inlet port 6 communicating with the bore 2 inspaced relation to the lower end thereof. 'I'he upper end of the duct 4is also formed with a port I communicating with the bore 2 substantlallymidway the ports 8 and 9 of upper and lower ends of the duct 5 andattention is called to the fact that the port 8 at the upper end of theduct or passage 5 communicates with the bore 2 at the bottom of thesocket 3. This portion I of the bore 2 with which the port 8communicates is enlarged diametrically and provides a chamber into whichoil passes from the duct or passage and then upwardly through the valvecasing to which the standing valve is attached.

'I'he core of the valve fits snugly within the bore 2 of the casing Iand extends longitudinally therein for substantially its entire length.This core is formed of sections and has an upper section II, a lowersection I2 and a series of intermediate sections connected in end to endengagement with the end section and to each other. The upper section IIis of tubular formation and has its upper end portion externallythreaded to form a neck I3 of a diameter to be screwed into aninternally threaded socket I4 formed at the lower end of a coupling I5which connects the core of the'standing valve with a vertically disposedreciprocating pump I6 having a construction substantially correspondingto that disclosed in Patent No. 1,807,741, issued June 2, 1931. At thebase or lower end of the neck I3 an outstanding collar or annular flangeII is formed about the section II. This flange serves not only as anabutment for the lower end of the socket I4 to insure a tight llt butalso constitutes an outstanding annular support which rests upon thebeveled face or seat I8 at the bottom of the chamber I0 and serves tomaintain the core in its proper position in the valve casing and preventit from sliding downwardly beyond the position shown in Figure 1.Packing rings I9, which are formed of compressible material, fit snuglyabout the section II under the flange Il with'a metal ring 20 betweenthem and when the section 2| of the core is screwed upon the threadedlower' end portion 22 of the section Il, the packingrings I9 will becompressed and thus-cause them to have tight fit against walls of thebore 2 between the chamber I0 and the port 1 at the upper end ofthe duct4. The section 2| which is disposed at the level of the upper end of theduct 4 is in the form of a cage having side openings 23 so thatcommunication will be established between the duct 4 and the bore orpassage 24 of the upper section l and oil may move through the duct 4and the passage 24 in a manner to be hereinafter specifically set forthwhen the reciprocating pump is in operation.

The upper one of the intermediate sections, which is indicated by thenumeral 25, has a solid upper portion which is screwed into the lowerend of the cage or coupling 2| and the lower portion 23 of thisintermediate section is diametrically enlarged and formed hollow toprovide a cage 21 having side openings or passages 25 disposed oppositethe lower end of the duct 5 in registering relation to its lowerport 9.Packing rings 29 which are spaced from each other by a metal ring 30,fit about the solid upper portion of the section 25 between thecircumferentially extending shoulder formed by the upper end of theenlarged lower portion 26 of the section and the lower end of thecoupling 2|. These packing rings are compressed when the section 25 isscrewed into the lower end of the cage or coupling 2| and havetightnfltting contact with walls of the bore 2 between the port 1 at theupper end of the duct 4 and the port 9 at the lower end of the duct 5.It will thus be seen that oil cannot pass through the bore 2 between theport 1 and the port 9. The cage 25 constitutes a guard or housing for avalve ball 3| which fits loosely within the cage and is movable into andout of engagement with the valve seat-32 which is in the form of anipple and mounted in the lower end portion of the cage where it isfirmly held in place when the externally threaded upper end portion 33of the section 34 is screwed into the internally threaded lower endportion of the section 25. 'I'his section 34 is of tubular formation andhas its intermediate portion externally thickened to form an outstandingannular shoulder 35 serving as an abutment for thevupper one of a pairof sealing rings 36 which t about the section 34 with a metal ring 31between them. The packing rings 35 are compressed when the cage orsection 39 is screwed tightly upon the threaded lower end of the section34 and have tight con- .m tacting engagement with walls of the bore 2 toprevent flow of oil throughthis portion of the bore 2 between the port 5at the lower end of the duct 4 and the port 9 at the lower end of theduct 5. Since the section 34 is of tubular formation, oil may flowthrough itat certain periods during operation of the pump. This cage 33has its lower end in threaded engagement with the upper end of the lowersection I2 of the core and within the lower end portion of the section39 is mounted a valve seat 39 which has the form of a nipple so that oilmay flow upwardly through the bore 49 of the section I2 and through thevalve seat 39 and the cage to enter the lower end of the duct 4. Thevalve ball 4| which fits loosely in the cage 39 normally rests uponthevalveseat 39 but may be moved upwardly vto a raised position in whichit bears against the seat 42 and permit oil to flow from the cagethrough its side port 43 and enter the duct 4 through the port 6 at thelower end thereof.

Packinglrings 44 having a metal ring 45 between them ilt about the lowersection |2 and maintained in place thereon by la sleeve nut 43 whichwhen screwed into place causes the packing rings to be expanded and havetight tting engagement with walls of the bore 2. Therefore. the portionof the bore 2 between the lower end of the duct 4 andthe lower end ofthe valve casing will be sealed and oil prevented from flowing upwardlyexcept through the bore 43 of the section I2.

When this improved pump is in use the valve casing is connected with thelower end ofthe well tubing or casing so that, it extends down intothebody of oil at the bottom of a well. The pump rod is disposedvertically in the well in the usual manner with its lower end connectedwith the reciprocating pump I5 and its upper end operatively connectedwith the usual walking beam so that reciprocating motion will beimparted to the pump. As the reciprocating portion of the pump is drawnupwardly, oil is sucked upwardly into the standing valve and passesupwardly through the bore 40 of the lower section I2. This moving columnof oil unseats the valve upwardly seats against the valve seat 42 sothat the bore 41 of the section 34 is substantially closedand,'therefore, the valve ball 3| remains in its lowered position inwhich it is seated upon the valve seat 32 and shuts off communicationbetween the bore 41 and the duct 5. Upon downward movement of thereciprocating por-` tion of the pump, the oil which has been drawnupwardly is forced downwardly through the upper section and the duct 4into the cage 33 and as the valve ball 4| will now be seated upon I thevalve seat 39 to prevent ow of the oil back through the bore 49 of thelower section into the' well, the oil will pass upwardly through thebore 41 of the section 34 and unseat the valve ball 3| so that it mayflow upwardly through the cage 26 and the duct 5 into the chamber Ilfrom which it will ow upwardly through the valve casing to the upper endof the well. 'I'he reciprocating portion of the pump will then againmove upwardly to draw another charge of oil from the well and as thevalve ball 3| will have returned to its lowered or seated position, oilwill be prevented from flowing downwardly through the duct 35 from thewell casing. An-

other downward movement of the reciprocating portion of the pump willforce the charge of oil just withdrawn from the well upwardly throughthe section 3| and duct 35 into the well casing or tubing. It will thusb'e seen that durward movement of the reciprocating portion of the pumpand. quickly forced out of the standing valve into the well tubingduring a'downward movement of the reciprocating portion of the 7;

pump. When it is necessary to clean the standing valve or repair orreplace any of the elements forming its core, this can be easily doneafter withdrawing the standing valve from the well as the core may thenbe withdrawn as a unit from the valve casing and then 'be very easilytaken apart and reassembled after it has been thoroughly cleaned and anyparts repaired or new parts substituted if necessary.

Having thus described the invention, what is claimed as new is:

1. In a standing valve, a tubular casing having its upper end adaptedfor connection with the lower end of a well tube, walls of the valvecasing being formed with upper and lower longitudinally extending ductsoffset relative to each other longitudinally of the valve casing tostagger the ducts and dispose their ends out of opposed relation to eachother, a core tting in the bore of the tubular valve casing and formedwith a bore open at its lower end and havingside ports communicatingwith lower ends of both ducts and with the upper end of the lower duct,the bore of said core being blocked between the upper end of the lowerduct and the lower end of the upper duet and the upper duct having itsupper end opening directly into the casing, said core having its upperend adapted for connection with a reciprocating pump serving as aclosure .for the upper end of its bore, and valve members carried bysaid core for controlling directional flow of liquid through the coreand ducts.

2. A standing valve for a pump comprising a tubular casing formed withupper and lower longitudinally extending ducts having their ends openinginto the bore of the casing, the ducts being offset longitudinally ofthe casing to dispose the ducts in staggered relation to each other andposition their ends out of opposed relation to each other, a hollow coretting into the bore of said casing and formed with side ports spacedfrom each other longitudinally of the core and communicating with thelower end of the upper duct and the upper and lower ends of the lowerduct, a barrier'in said core between the ports communicating with thelower end of the upper duct and the upper end of the lower duct, andvalve members carried by said core in cooperating relation to the portscommunicating with lower ends of the upper and lower ducts forcontrolling directional ilow of fluid through the core and ducts.

3. A standing valve for a pump comprising a tubular casing havinglongitudinally' extending ducts offset longitudinally of the casing todis-g pose ends of an upper duct out of opposed relation to ends of alower duct, a core extending longitudinally in the bore of said-casingand formed with side ports communicating with the lower end of the upperduct and the upper and lower endsof the lower duct, the upper end of theupper duct being unobstructed by said core, packing about said corehaving tight fitting engagement with walls of the bore of said casing toprevent passage of fluid through the bore of the casing about the core,said core having its upper end adapted to be connected with areciprocating pump, and valve members mounted in said core and housed bythe portions of the core having the side ports communicating with lowerends of the upper and lower ducts, said valve members normally remainingin a lowered closed position and being shiftable upwardly to an openposition and serving to control directional iow of fluid through thecore and ducts.

4. A standing valve for a pump comprising a tubular casing having upper-and lower ducts extending longitudinally thereof with their endsopening into the bore of the casing and the ends of the upper duct beingoiset from ends of the lower duct longitudinally of the casing, a coreextending longitudinally in the bore of said casing and having its upperend disposed out of blocking relation tothe upper end of the upper ductand adapted for connection with a reciprocating pump, said core beingformed of sections connected with each otherand certain of said sectionshaving side ports communicating with the ducts of the casing, onesection having a solid portion constituting a barrier to prevent ow ofliquid through the core between the lower end of the upper duct and theupper end of the lower duct, and valve members in said core housed bythe portions Vof the core having ports communicating with lower ends ofthe upper duct and lower duct and movable from a closed position to anopen position.

5. A standing valve for a pump comprising a tubular casing having upperand lower ducts extending longitudinally of the casing and offsetrelative to each other longitudinally of the casing to dispose theirends out of opposed relation to each other, a hollow core ttlng in thebore of said casing and having its upper end out of blocking relation tothe upper end of the upper duct and adapted to be connected with areciprocating pump, said core consisting of a plurality of sectionsdisposed in endl to end engagement with each other and threaded to eachother, certain of said sections having their walls formed `with openingsand constituting upper, lower andintermediate cages, the upper cagebeing disposed in position to communicate with the upper end of thelower duct, the intermediate cage communicating with the lower end ofthe upper duct and the lower cage communicating with the lower end ofthe lower duct, tubular valve seats carried by said core and located atlower ends of the intermediate cage and lower cage, valve balls in theintermediate cage and lower cage normally resting upon the valve seatswhen in a closed position and being shiftable up. wardly to an openposition, one section having a solid portion constituting a barrierbetween the upper cage.` and the intermediate cage, and packing carriedby said core to bear against walls of the bore of the casing and preventow of uid through the bore of the casing about the core.

6. A stand valve for a pump comprising a tubu- Alar casing, walls of thecasing being formed with upper and lower ducts extending longitudinallyf. therein at opposite sides thereof in staggered relation to each otherwith their ends opening into the bore of the casing in longitudinallyoffset relation to each other, ahollow core tting in the bore of saidcasing and having side portsA spaced from each other longitudinally ofthe core and each communicating with an end of a ccoperating duct, apartition blocking the core between the upper end of the lower duct andthe lower end of the upper duct, and valves for controlling flow offluid through the core and the lower ends of the ducts. Y/ W FRANK C.RICHARD N. VICKERS.

